I made a map in forge mode and it is supposed to be a 1 life round based game type like breakout. When we load the map up in custom games and try to play the map in breakout our weapons we placed in forge mode wont spawn on the map on even rounds. { rounds 2,4,6,8…etc,} We have also tried a slayer game type with 1 life per round and a round win limit set. The weapons just wont spawn on those rounds. We have tried making different maps and playing them in a round based gametype and the same thing happens. HELP!!!
This could be a very similar bug to this thread here: https://www.halowaypoint.com/en-us/forums/e0d9938206f04a598ce84f2c8cadce02/topics/despawning-objects-in-round-2-4-of-infection/8bf7dfe5-30b0-4f46-8d41-10ce66694377/posts?page=1#post14.
That thread is based on infection, but the same issues apply to any gametypes with a large number of rounds. My advice would be to severely limit the number of items you have on your maps. If you get it to less than 1400, generally most items will spawn in, however your scripts will still be very buggy. If you want your scripts to work normally, the number of objects will have to be reduced further.
I briefly mentioned it to Tom French on twitter about this issue (https://twitter.com/KieranRivers/status/839548075370774528 - have a look at all his Tweets and replies to mine around that time for the full picture). He concluded that they had insufficient information of when it occurs to work on a fix. Maybe if you could Tweet your issue to him as well, it might help gather more information on the issue and develop a fix faster.
If you do come across anything that solves the problem entirely, let me know, as I really need a fix for some of my maps too!
Hope this helps.